following 3 phase continous duty service motor are connected to a common copper feeder.
28 amp FLC full voltage start squirel cage motor
72 amp FLC full voltage start squirel cage motor
130 amp FLC full voltage same as above
what is the maimum rating of non time delay fuse that would b permitted as overcurrent protection for the feeder... answer = 450.
now ive been trying on this for AGES , i jsut cant get my head around where the hell i go to find this information i get crazy answers....one is 130 X 2 (table 29) then add the sum of other motors, which = 360. but then wat ? the circuit breakers table 13 wont match 450 n i could use 400....so i dont know im stuk.....
28 amp FLC full voltage start squirel cage motor
72 amp FLC full voltage start squirel cage motor
130 amp FLC full voltage same as above
what is the maimum rating of non time delay fuse that would b permitted as overcurrent protection for the feeder... answer = 450.
now ive been trying on this for AGES , i jsut cant get my head around where the hell i go to find this information i get crazy answers....one is 130 X 2 (table 29) then add the sum of other motors, which = 360. but then wat ? the circuit breakers table 13 wont match 450 n i could use 400....so i dont know im stuk.....